- Air_______ is one of the biggest problems in the world today
- Yes. We must take action to make the air less_______.
| A．pollution; pollution | B．pollute; pollution |
| C．pollution; pollute | D．pollution; polluted |
--- How is your grandma?
--- She’s fine. She used to _____ TV at home after supper. But now she is used to _____ out for a walk.
| A．watch; go | B．watching; go |
| C．watch; going | D．watching; going |
If you don’t know the new words, you can look ______ in the dictionary.
| A．it up | B．up it | C．them up | D．up them |
______we take exercise, _____ we will be.
| A．Much; healthy |
| B．The more; the healthy |
| C．The more; the healthier |
| D．More; the healthier |
-Must I finish all the homework this evening?
-No, you __________. Tomorrow is Saturday, and you have enough time for it.
| A．mustn’t | B．needn’t | C．won’t | D．can’t |
We teenagers shouldn’t just ________ our looks．We should develop our abilities．
| A．pay attention to | B．look forward to |
| C．end up | D．lay out |